Thermodynamic analysis of subcooling and superheating effects of alternative refrigerants for vapour compression refrigeration cycles
2005; Wiley; Volume: 30; Issue: 5 Linguagem: Inglês
10.1002/er.1151
ISSN1099-114X
AutoresArzu Şencan, Reşat Selbaş, Önder Kızılkan, Soteris A. Kalogirou,
Tópico(s)Heat Transfer and Boiling Studies
ResumoInternational Journal of Energy ResearchVolume 30, Issue 5 p. 323-347 Research Article Thermodynamic analysis of subcooling and superheating effects of alternative refrigerants for vapour compression refrigeration cycles Arzu Şencan, Arzu Şencan [email protected] Department of Mechanical Education, Technical Education Faculty, Süleyman Demirel University, 32260, Isparta, TurkeySearch for more papers by this authorReşat Selbaş, Reşat Selbaş [email protected] Department of Mechanical Education, Technical Education Faculty, Süleyman Demirel University, 32260, Isparta, TurkeySearch for more papers by this authorÖnder Kızılkan, Önder Kızılkan [email protected] Department of Mechanical Education, Technical Education Faculty, Süleyman Demirel University, 32260, Isparta, TurkeySearch for more papers by this authorSoteris A. Kalogirou, Corresponding Author Soteris A. Kalogirou [email protected] Department of Mechanical Engineering, Higher Technical Institute, P.O. Box 20423, Nicosia 2152, CyprusDepartment of Mechanical Engineering, Higher Technical Institute, P.O. Box 20423, Nicosia 2152, CyprusSearch for more papers by this author Arzu Şencan, Arzu Şencan [email protected] Department of Mechanical Education, Technical Education Faculty, Süleyman Demirel University, 32260, Isparta, TurkeySearch for more papers by this authorReşat Selbaş, Reşat Selbaş [email protected] Department of Mechanical Education, Technical Education Faculty, Süleyman Demirel University, 32260, Isparta, TurkeySearch for more papers by this authorÖnder Kızılkan, Önder Kızılkan [email protected] Department of Mechanical Education, Technical Education Faculty, Süleyman Demirel University, 32260, Isparta, TurkeySearch for more papers by this authorSoteris A. Kalogirou, Corresponding Author Soteris A. Kalogirou [email protected] Department of Mechanical Engineering, Higher Technical Institute, P.O. Box 20423, Nicosia 2152, CyprusDepartment of Mechanical Engineering, Higher Technical Institute, P.O. Box 20423, Nicosia 2152, CyprusSearch for more papers by this author First published: 15 August 2005 https://doi.org/10.1002/er.1151Citations: 18AboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Abstract This paper presents a computer-based first law and exergy analysis applied to vapour compression refrigeration systems for determining subcooling and superheating effects of environmentally safe new refrigerants. Three refrigerants are considered: R134a, R407c and R410a. It is found that subcooling and superheating temperatures directly influence the system performance as both condenser and evaporator temperatures are affected. The thermodynamic properties of the refrigerants are formulated using artificial neural network (ANN) methodology. Six ANNs were trained to predict various properties of the three refrigerants. The training and validation of the ANNs were performed with good accuracy. The correlation coefficient obtained when unknown data were used to the networks were found to be equal or very near to 1 which is very satisfactory. Additionally, the present methodology proved to be much better than the linear multiple regression analysis. From the analysis of the results it is found that condenser and evaporator temperatures have strong effects on coefficient of performance (COP) and system irreversibility. Also both subcooling and superheating affect the system performance. This effect is similar for R134a and R407c, and different for R410a. 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